Projection unit for a head-up display

Details Projection unit for a head-up display Projection unit for a head-up display

2007-11-20

2007-11-20

Harrington, Alicia M (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

C345S007000

Reexamination Certificate

active

11377110

ABSTRACT:
The invention is directed is directed to a projection unit for a head-up display having an image generator, a mirror and a refractive lens which are arranged in a housing one behind the other in the light propagation direction. The beam path is directed to a windshield. Notably the mirror has a concave reflection surface, and the lens has a free-form surface at lease on one of the optically active surfaces (D-U and/or D-O).

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